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• Organization: Department of the Interior
• Dataset Last Updated: September 08, 2022 at 12:00 AM

Reactive nitrogen is transported from the atmosphere to the landscape as wet and dry deposition that contributes to annual nitrogen loads to the Chesapeake Bay. Estimates of atmospheric inorganic...

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• Organization: National Institute of Standards and Technology
• Dataset Last Updated: July 21, 2015

This Standard Reference Material (SRM) is a primary gas mixture for which the amount-of-substance fraction, expressed as concentration, may be related to secondary working standards. This SRM is...